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QM48T50012 DC-DC Converter Data Sheet
36-75 VDC Input; 1.2 VDC @ 50A Output
100
90
80
70
60
50
100
90
80
70
60
50
40
30
20
10
0
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
40
30
20
10
0
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
20
30
40
50
60
70
80
90
20
30
40
50
60
70
80
90
Ambient Temperature [°C]
Fig. 8: Available output power for balanced load current (Iout1
= Iout2) vs. ambient air temperature and airflow rates for con-
verter with D height pins mounted vertically with Vin = 48 V, air
flowing from pin 3 to pin 1 and maximum FET temperature ≤
120 ° C.
20.0
17.5
15.0
12.5
10.0
500 LFM (2.5 m/s)
Ambient Temperature [°C]
Fig. 9: Available output power for balanced load current (Iout1
= Iout2) vs. ambient air temperature and airflow rates for con-
verter with D height pins mounted horizontally with Vin = 48 V,
air flowing from pin 3 to pin 1 and maximum FET temperature
≤ 120 ° C.
20.0
17.5
15.0
12.5
10.0
500 LFM (2.5 m/s)
7.5
5.0
2.5
0.0
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
7.5
5.0
2.5
0.0
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
20
30
40
50
60
70
80
90
20
30
40
50
60
70
80
90
Ambient Temperature [°C]
Fig. 10: Available balanced load current (Iout1 = Iout2) vs.
ambient air temperature and airflow rates for converter with D
height pins mounted vertically with Vin = 48 V, air flowing from
pin 3 to pin 1 and maximum FET temperature ≤ 120 ° C.
Ambient Temperature [°C]
Fig. 11: Available balanced load current (Iout1 = Iout2) vs.
ambient temperature and airflow rates for converter with D
height pins mounted horizontally with Vin = 48 V, air flowing
from pin 3 to pin 1 and maximum FET temperature ≤ 120 ° C.
MAY 08, 2003 revised to NOV 13, 2006
Page 9 of 15
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